linux-kernel - Re: next-20130128 lockdep whinge in sys

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Date:	Tue, 05 Feb 2013 10:49:22 -0500
From:	Valdis.Kletnieks@...edu
To:	Minchan Kim <minchan@...nel.org>
Cc:	Shaohua Li <shli@...nel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Rik van Riel <riel@...hat.com>, linux-kernel@...r.kernel.org,
	linux-mm@...ck.org
Subject: Re: next-20130128 lockdep whinge in sys_swapon()

On Mon, 04 Feb 2013 10:46:38 +0900, Minchan Kim said:

> Could you test this patch?
>
> From 81cae17c55ade897a7e06b01c864f1c250b40f8b Mon Sep 17 00:00:00 2001
> From: Minchan Kim <minchan@...nel.org>
> Date: Mon, 4 Feb 2013 10:43:32 +0900
> Subject: [PATCH] mm: Get rid of lockdep whinge on sys_swapon
>
> [1] forgot to initialize spin_lock so lockdep is whingeing
> about it. This patch fixes it.
>
> [1] 0f181e0e4, swap: add per-partition lock for swapfile
>
> Cc: Shaohua Li <shli@...nel.org>
> Reported-by: Valdis Kletnieks <Valdis.Kletnieks@...edu>
> Signed-off-by: Minchan Kim <minchan@...nel.org>

I applied this to a next-20130128, and lockdep doesn't complain about
swapon().  Feel free to add a 'Tested-By:' to the patch and push it
upstream...


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